Rough rounding machine



Dec. 21, 1954 A. c. KULIK I 2,697,238

ROUGH ROUNDING MACHINE Filed Aug. 26, 1953 2 Sheets-Sheet 1 50, 64 961.3.5 e 90 3 44 52 0 e 5 (i8 I 60 32 F 7:5? 5 6 (94 9 G) 6 50 w 116' 2 F52 Tm l \C o QQ L l 9 0 11] Inventor Alphpnse C Kulik By his AttorneyDec. 21, 1954 A. c. KULIK 2,697,238

ROUGH ROUNDING MACHINE Filed Aug. 26, 1953 2 Sheets-Sheet 2 J InventorAnhonse CKu/ik By his At figiney United States Patent 2,697,238 ROUGHROUNDING MACHINE Alphonse C. Kulik, Ipswich, Mass, assignor to UnitedShoe Machinery Corporation, Flemingtou, N. J., a corporation of NewJersey Application August 26, 1953, Serial No. 376,619 13 Claims. (Cl.12--85) This invention relates to rough rounding machines and isillustrated herein as embodied in a machine of the type disclosed inUnited States Letters Patent No. 2,543,760, granted on March 6, 1951,upon an application of I. C. Cantley.

The above-mentioned Cantley machine has a single guide which is adequatefor determining the sole extension in certain classes of work, eitherbecause the shoe construction makes the use of a second guideunnecessary, or because of simple requirements as to the sole edgeextension. However, in some cases the shape of the shoe does not permitthe use of only one guide; and in others it may be desired, for reasonsof style, to position the shoe when the forepart is rounded differentlyfrom the manner in which it is positioned when its shank portions arerounded.

An instance of the use of both a crease guide and fore-part gage forpositioning the shoe, while its shank and forepart portions,respectively, are rounded, occurs in a well-known rounding machine ofthe type disclosed in United States Letters Patent No. 1,030,606.granted on June 25, 1912, upon an application of F. H. Perry. In thismachine, the forepart gage, which normally is in its inoperativeposition, is moved into its operative position by lowering a treadle.Simultaneously with any such movement of the forepart gage, the creaseguide, which is normally in its operative position, is moved awaytherefrom. This interchange of the guide and gage is made whenever therounding out passes out of the shank into the forepart and an oppositeinterchange, by which the gage and guide are returned to their originalpositions, is made whenever the rounding cut passes out of the forepartinto the shank.

It may be desired, according to different requirements of shoemaking,that when an interchange of the guide and gage takes place, the shoe beheld at the same height relatively to the tool or that the shoe beeither raised or lowered, depending upon whether the sole edge extensionis to be the same or different in the forepart and shank. In order thatthis interchange of guide and gage, in the operation of the Perrymachine, may be made gradually when the sole edge extension is differentin the shank and forepart, the machine is provided with a so-calledgrading device which utilizes the movement of the forepart gage into andout of its operative position to control the movement of the creaseguide out of and into its operative position, respectively. As anymovement of the forepart gage toward its operative position isaccompanied by a corresponding, although smaller, movement of the creaseguide away from its operative position, the shoe may be subject to anundesired premature movement relatively to the knife, under the controlof the crease guide, before the control of the shoe is taken over by theforepart gage. With such operation of the guide and gage thetransitional cut tends to be too long if the interchange of the gage andguide is made slowly enough to make the transitional cut gradually; andwhether the transitional cut is made gradually or as abruptly as isusually desired, retractive movement of the crease guide prior to thearrival of the forepart gage into its operative position, re sults in anundesired hollow in the sole edge.

This difficulty has been partly overcome by the provision of means, asdisclosed in United States Letters Patent No. 1,331,789, grantedFebruary 24, 1920, upon an application of L. G. Smith, which cooperateswith the above-mentioned grading device, for delaying the movement ofthe crease guide out of its operative position until the forepart gagewill have arrived in its operative position. However, the crease guideof this construction is operated so abruptly,

provided in the illustrative macrease guide and forepart gage,

the combination with separate and distinct operating mechanisms for theguide and gage each of which mechanisms has a predetermined butadjustable range of movement, of operator controlled means common toboth mechanisms for driving them selectively, each' mechanism beingoperated throughout its range of movement, or substantially so, beforethe other is operated} Thus, during the first interchange of the guideand gage the forepart gage is moved into engagement with the shoe beforeany appreciable retractive movement of the crease guide takes place; andconversely, during the second interchange, the crease guide is movedinto its operative position before the forepart gage is retracted enoughto permit the shoe to rise above its position to be determined by thecrease guide.

Invention is also to be recognized in provisions for separatelyadjusting both guide with respect to their operating mechanisms. Hence,When either operating mechanism is moved to one end of its predeterminedrange of movement, the guide or gage will also have been moved to apredetermined operative position depending upon its adjustmentrelatively to its operating mechanism, and it is evident that theadjustment of either the guide or gage has no effect upon the other.

In accordance with a further feature of the invention, theabove-mentioned selective operation of the operating mechanisms for theguide and gage is obtained by the ber of the treadle operated means andthe operating mechanisms, one set of these connections being providedyieldingly to act upon the forepart gage operatforepart gage into itstween the driving member and this operating mechanism.

According to a further feature of the invention, pro-' vision has beenmade for adjusting each of the abovementioned operation of either of theoperating mechanisms can be varied without affecting that of the other.For the same reason, any desired variation in the interchange of theguide and gage can be obtained and without affecting heir operativepositions. These and other features of the invention will now bedescribed in greater detail with reference to the accompanying drawings,and will be defined in the claims.

In the drawings,

Fig. 1 is a perspective view of an illustrative machine embodying theinvention;

Fig. 2 is a Fig. 1;

Fig. 3 is a sectional elevation of the from the left, the section beingtaken along the line IIIIII in Fig. 2; and

Fig. 4 is an elevation of a part of the structure shown in Fig. 2 asviewed from the left.

particularly upon belng returned to 1ts operative position, as todefeat, to

the forepart gage and crease' but during further move-'- sets ofconnections so that the timing of theplan view of the structureillustrated in machine as viewed' A shoe S to be operated upon in theillustrated machine is presented thereto with. its. bottom seated upon areciprocatory bottom rest 12 and the sole edge is rounded by a choppingknife 14 which cuts through the sole against an oscillating feed point18. The feed point and bottom rest. are moved from side to side. insynchronism to impart intermittent feeding movements to the workextending from right to left, the feed point having a dwell between itsfeed and return strokes during which the knife makes its cut through thestationary work against the feed point. The above-mentioned parts, theirmounting and their driving mechanism, are the same in the presentmachine as in that disclosed in the abovementioned Cantley patent, towhich reference may be made for a complete disclosure of this structure.

The shoe is positioned relatively to the knife, to control the sole edgeextension, either by a crease guide which is received in the welt creaseof the shank portion of the shoe in the usual manner, or by a forepartgage 22 which engages the margin of the upper adjacent to the weltcrease around the forepart. The crease guide and forepart gage, althoughthey are the same individually as the corresponding parts in thewell-known type of rough rounding machine disclosed in theabovernentioned Perry patent, are mounted and operated, in accordancewith the present invention, so as to permit greater flexibility in theiradjustment and control of their interchange when the rounding cutcrosses the junctions of the shank and forepart.

With the machine at rest, the crease guide 20 is supported in its normaloperative position upon a U-shaped slide 24 (Figs. 1 and 3) which ismounted to move freely vertically in a channel formed in a housing 26for the operating mechanism of the machine. A cover 28 fixed'to theforward end of the housing holds the slide in the above-mentionedchannel. The crease guide is adjusted vertically, to change itsoperative position relatively to the knife, by turning a screw 30 whichis threaded into the slide 24 and is mounted to rotate freely,

without moving axially thereof, within a trunnion block 32. Thistrunnion block is pivotally mounted upon a pair of trunnions 34 whichare threaded in the forward ends of a bifurcated lower arm of a bellcrank 36 which is mounted to swing freely upon a cross shaft 38, the

latter being fixed upon a bracket 40 secured to the top of the housing26. The bell crank is operated by toggle links 42, 44, which have acommon pivotal connection at 46, the former link being fixed to a shaft48, and the latter being pivoted at 49 to an upwardly extending arm ofthe bell crank 36. A portion of the shaft 48 extending outwardly to theleft from the bracket 40 carries a lever 50 and an arm 52, the latterbeing fixed to the shaft by means of a key 54 (Fig. 4) and the formerbeing freely rotatable upon the shaft. A spring-biased detent 56 (Fig.2) carried by the arm 52 may be retracted entirely within the arm bypulling upon its knob to permit a change in the angular relation of thearm 52 and the lever 50, for a purpose to be described later, the detentbeing arranged to enter either of two holes 60, 62 (Fig; 4) formed inthe rear end of the lever 50.

The above described operating mechanism for the crease guide has anadjustable range of movement both extremes of which can be varied byadjusting setscrews 64, 66 which are threaded into a forwardly extendingarm of the lever 50 and are arranged to abut a stop 68 fixed upon thebracket 40. The setscrew 66 is normally held in engagement with the stopowing to the provision of a spring 70 (Fig. 3) which is compressedbetween a lug 72 fixed to the bracket 40 and a shoulder on a rod 74which is mounted to slide axially in the lug. The rod is pivoted at 76to an arm 78 fixed to the abovementioned toggle link 42. Accordingly,the spring 70 tends to swing the toggle links 42. '44 upwardly, suchmovement of the links being limited. by the enga ement of the setscrew66 with the stop 68. Thus, although the setscrew 66 has the effect ofcontrolling the operative position of the crease guide 20 throu h themechanism above described, its function, together with that of thesetscrew 64, is primarily to limit the range'of movement of theoperating mechanism for the crease guide. The screw 30 is ordinarilyemployed to adjust the operative position of the crease guide for anydesired range of movement of its operating mechanism, as limited by thescrews 64, 66.

The mounting of and the operating mechanism for the forepart gage 22will now be described. The forepart gage is pivotally mounted at 80(Figs. 1 and 3.) upon a slide 82 which is mounted to move freelyheightwise within a swivel block 84 having a recess at each side thereofin which are seated trunnions 86, 86 threaded in lugs protrudingforwardly from the cover 28.

spring-biased detent 88 acts upon the upper end of the forepart gage tohold its lower portion in engagement with the forward surface of thecrease guide 20. Into the upper portion of the slide 82 is threaded ascrew 90 which is mounted to rotate freely, but without movement axiallythereof, in a swivel block 92. This block is carried by a pair oftrunnions 94, 94 threaded in the forward bifurcated end of an arm 96which is pivoted upon the bracket 40 at 98 and has an extension 100rising upwardly therefrom. A toggle link 102 is pivoted at 104 to theextension 100 and is also pivoted at 106 to another toggle link 108which is fixed to a shaft 110 rotatably mounted in the bracket 40. Uponthe lefthand end of this shaft there is fixed an arm 112 the forward endof which carries a, swivel block 114 which is bored freely to receive anupwardly spring-biased treadle rod 116, the upward movement of which islimited, in the position illustrated (Fig. 4), by a stop (not shown).

1 The upper position of the arm 112, and hence the collapsed position ofthe toggle. 102, 108, may be varied by adjusting check nuts 118 threadedon the treadle rod beneath the swivel block, the latter being yieldinglyheld by a spring 120, against the upper check nut 118. The upper end ofthe spring is supported by a pair of check nuts 122 which may beadjusted along the treadle rod to vary the compression in the spring.

It will now be evident that by lowering the treadle rod 116 the normallycollapsed toggle. links 102, 108 will be moved into their extendedrelation which is determined by the engagement of a projection 124 onthe link 108 with the top of the link 102. With the toggle links in thisrelation the forepart, gage is in its operative position which may bereadily varied, independently of the crease guide, by adjusting thescrew 90.

As stated above, the toggle links 42, 44 in the operating mechanism forthe crease guide 20 are normally in their extended relation and thecrease guide is normally in its operative position. The forepart gage isnormally in its inoperative position because the toggle links 102, 108in the operating mechanism for the forepart gage are normally in theircollapsed relation. However, when the treadle rod 116 is lowered tobring the forepart gage into its operative position the lower one of apair of check nuts 126 (Fig. 4), threaded on the treadle rod, engages aswivel block 128 which is carried by a link 130, the latter beingpivoted upon the forward end of the lever 50. Further downward movementof the treadle rod, permitted by the yielding action of the spring 120,swings the lever 50 of the operating mechanism for the crease guide soas to move the crease guidefrom its operative position into itsinoperative position. In order to provide a freely sliding connectionbetween the treadle rod and the swivel block 128, a tube 131 encases therod and is arranged to pass freely through the swivel block 128, and apair of check nuts 132, threaded upon the treadle rod, hold the tubefirmly against thelower checks nut 126. It will be understood that thecheck nuts 126 may be adjusted along the treadle rod to provide anydesired amount of lost motion of the treadle rod with respect to theswivel block 128 before the latter is engaged bythe lower check nut 126and the movement of the crease guide out of its operative position isbegun. Similarly, for any given adjustment of the check nuts 126, whichcontrol when, during the lowering of the treadle rod, the operation ofthe crease guide operating mechanism is begun, any desired adiustment ofthe check nuts 118 can be made to control the arrival of the forepartgage into its operative position with respect to the operation of thecrease guide. Thus,

any desired change in the timing of the interchange of the gage andguide may be made without affecting their operative positions.

The use and operation of the illustrative machine will now be described,assuming first that the rough rounding operation will be performed upona shoe which is to have the same sole edge extension around the forepartas in the shank. The rounding operation is begun, on a right shoe forexample, at the inside shank, the

'- out being started at the heel end of the sole, continued shoe isordinarily viewed, exposed.

To effect this change in the operator depresses the ering the treadlerod guiding of the shoe, the treadle (not shown) thereby low- 116. By sodoing, the forepart the chopping knife.

of the forepart gage into its operative position must be this end, justreferred to above, the nuts 126 on the treadle rod 116 will have beenadjusted the toggle 42, 44 against the pressure of the spring 70 and tomove the crease guide away from the shoe upper. With the treadle rod nowheld in its lowermost position, as determined by the setscrew 64 bearingagainst the stop 68, the rounding out is carried around the forepartunder the control of the forepart gage to the junction of the forepartwith the outside shank near the outside ball line.

At this point, where the sole edge above) begins to converge toward thethe operator releases the treadle permitting the treadle operativeposition without affecting the forepart gage because lost motionpermitted by the ex ansion of the spring 120 now occurs between theswivel block 114 until the upper check nut 118 engages the lower side ofthe swivel block ment of the setscrew 66 with the Under anothershoemaking requirement calling for a relatively narrow sole edgeextension around the forepart, that is, an extension considerablynarrower than that produced by the above machine, it is necessary toperrnlt the shoe to rise relashank Dortion of the shoe. This result canbe elfected by readiusting the screw 90 so as to raise the forepart gageabove its former position.

With the machine in this state of adjustment, the treadle is depressedas the rounding out emerges into the forepart and the forepart gage isbrought nearly 6 to its'operativeposition without engaging the shoe. Atthis time, the 'lower one of the check nuts 126 engages the swivel block'128 and the retraction of the crease guide begins. Further lowering ofthe treadle now causes the forepart gage to be moved to its operativeposition and further retraction of the crease guide with which until'itengages the forepart gage which the cut made interchange between themresults in the quickest possible interchange.

interchange of the crease gulde and forepart gage for any settingthereof may be secured by an appropriate adjustment of the check nuts126, 118.

Under still another shoemaking condition, calling for a greater soleedge extension in the forenart than in the shank, the forepart gage 22is adjusted downwardly. by turning the screw 90, to a position belowthat obtained by the first described setting. With the mais still underthe control of the crease guide and before the forepart gage eaches itsoperative position. However. even with a relatively rapid movement ofthe treadle rod 116 this depressing action of the forepart gage on theshoe, necessary to effect the desired increased sole extension in theforepart, is relatively gentle because the toggle links 102, 108 areclosely approaching their fully extended relation and impart a relativeyslow movement to the forepart gage as compared with that of the treadlerod. Immediately upon the engagement of the forepart gage with the shoe.the control of the shoe is shifted from the crease guide to asdetermined by the setting of the check nuts 126 relatively to the swivelblock 128. When the rounding cut, after having been carried around theforepart, emerges into the shank and with the crease guide in such thatthe lesser sole edge extension in the shank is produced.

to its of the Now, as the rounding out emerges into the forepart and thetreadle rod 116 is lowered the crease guide is lowered simultaneouslyw1th the part gage to obtain a downward shoe under a more gentle actionthan is obtained by the use of the forepart gage alone. That is, thefirst lowering of the shoe "is effected, before it is engaged by theforepart gage, by the crease guide when the toggle links 42, 44 movedownwardly from their partially collapsed condition into their fullyextended cond tion. This latter condition occurs when the forepart gagewill have been brought into engigement with the shoe but before theforepart gage will have reached its operative 'position. Continuedlowering of the treadle rod causes the completion of the advance of theforepart gage into its operative position, during which the motion ofthe crease guide is soon reversed by the downward collapsing movement ofthe toggle links 42, {14 which causes the crease guide to be retractedinto its inoperative position.

When the rounding cut again passes from the forepart into the shank theabove described movements of the gage and guide take'place in theopposite order. That is, during the preliminary retractive movement ofthe forepart gage the crease guide is lowered into engagement with andto take over the control of the shoe, but from this point, as'theforepart gage is retracted from the shoe, the crease guide is raisedslightly to its operative position to permit the rise of the shoerelatively to the knife required to produce the lesser sole edgeextension in the shank.

-I-Iaving described my invention what I claim as new and desire tosecure by Letters Patent of the United States is: Y

1. In a rough rounding machine having a roundmg knife, a work support, aforepart gage, a crease guide, an operating mechanism for each of saidgage and guide, each mechanism having a predetermined range of movementand being movable alternately with the other to interchange thepositions of the gage and guide, and operator controlled means common toboth of sald mechanisms movable in one direction to move said gage andguide in succession into and out of their op erative positions,respectively, said operator controlled means when moved in the oppositedirection cooperating with said operating mechanisms to return saidguide and gage in succession to their original positions.

2. In a rough rounding machine, in combination, a rounding knife, a worksupport, a forepart gage mounted for .movement between a normalinoperative position and an operative position, a crease guide mountedfor movement between a normal operative position and an inoperativeposition, an operating mechanism for each of said gage and guide, andoperator controlled means common to both of said operating mechanismsand cooperating therewith in succession when moved in one direction tointerchange the positions of said gage and guide, said operatorcontrolled means when moved in the opposite direction cooperating withsaid operating mechanisms to restore said guide and gage in successionto their original positions.

3. In a rough rounding machine having a rounding knife, a work support,a forepart gage and a crease guide, each of said gage and guide beingmovable in alternation with the other into an operative position, anoperating mechanism for each of said gage and guide, an operatorcontrolled member common to and for driving both of said mechanisms tocause an interchange of the positions of said gage and guide, andconnections operated by said driving member for actuating said forepartgage operating mechanism and said crease guide operating mechanism insuccession, said. connections being arranged to permit lost motion ofsaid driving member relatively to said crease guide and forepart gageoperating mechanisms in succession.

4. In a rough rounding machine having a rounding knife, an anvil againstwhich said knife cuts,'a forepart gage, a crease guide, and operatingmechanisms for each of' said gage and guide for moving them betweenoperative and inoperative positions, the combination with anoperator-controlled driving member for both of said operatingmechanisms, said driving member being movable in one direction to causesaid gage and guide to be moved into and out of their operativepositions, respectively, of connections between said member and saidforepart gage operating mechanism for moving said gage from itsinoperative position into its operative position and then permittinglost motion of said driving member relatively to said forepart gageoperating mechanism in the said direction, and other connectionsoperated by said driving member during its said lost motion acting uponsaid crease guide operating mechanism to move said crease guide from itsperative position into its inoperative position,

5. In a rough rounding machine having a reciprocatory rounding knife, awork support for supporting a work piece against the thrust of theknife, a .forepart gage, operating mechanism for moving said gagebetween inoperative and'operative positions and arranged normally tohold said gagein its inoperative position, a crease guide, operatingmechanism for normally holding said crease guide in its operativeposition and operable to move said crease guide from its operativeposition into an inoperative position, operator controlled driving meansassociated with both of said operating mechanisms, connections operatedby said driving means and acting upon said forepart gage operatingmechanism to move said gage into its operative position and thereafterto permit lost motion of said driving means relatively to said forepartgage operating mechanism, and other connections between said drivingmeans and said crease guide operating mechanism for operating the latterto retract said crease guide out of its operative position in responseto the said lost motion of said driving means.

6. In a rough'rounding machine having a rounding knife, a work support,a forepart gage, a crease guide, said gage and guide being movablebetween operative and inoperative positions, operating mechanism forsaid forepart gage arranged to hold said gage normally in itsinoperative position, operating mechanism for said crease guide arrangednormally to hold said guide in its operative position, an operatorcontrolled driving member movable through a predetermined stroke in onedirection to cause an interchange of the positions of said gage andguide, a spring connecting said driving member and said forepart gageoperating mechanism for yieldingly acting upon said mechanism while saidgage moves into its operative position and thereafter permitting lostmotion between said driving member and said forepart gage operatingmechanism, and a stop on said driving member for cooperating with saidcrease guide operating means during the said lost motion to retract saidcrease guide from its operative position.

7. In a rough rounding machine having a rounding knife, a work support,a forepart gage and a crease guide each being movable between operativeand inoperative positions. an operating mechanism for each of said gageand guide, an operator controlled member for driving said operatingmechanisms, and connections between said driving member and saidoperating mechanisms for utilizing successive portions of the movementof said driv ing member in said one direction to move said gage andguide into and out of their operative positions respectivciy, saidconnections also permitting a lost motion between said driving memberand said crease guide operating means during the movement of saidforepart gage and a second lost motion between said driving member andsaidforepart gage operating mechanism during the movement of said creaseguide.

8. In a rounding machine having a rounding knife, a work support, aforepart gage and a crease guide mounted for movement between operativeand inoperative posi' tlons, an operating mechanism for each of saidgage and guide, an operator controlled member movable in one directionto operate said gage, operating mechanism and said guide operatingmechanism in succession, connections between said member and said guideoperating mechanism for permitting said member to move freely withrespect to said guide operating mechanism and then to act positivelyupon said guide operating mechanism to cause said guide to be retractedfrom its operative position, and other connections between said drivingmember and said gage operating mechanism for yieldingly acting upon saidgage operating mechanism to cause said gage to be moved into itsoperative position, said other connections then yielding to permit saidmember to move freely with respect to said gage operating mechanismwhile said crease guide is being retracted from its operative position.

9. In a rough rounding machine having rounding knife, a work support,-aforepart gage and a crease guide, each of said gage and guide beingmovable in aiternation with the other into an operative position,operating mechanisms for said gage andguide arranged normally to holdthem out of and in their operative positions respectively, an operatorcontrolled member common to and for driving both'of said mechanisms tocause an interchange of the positions of said gage and guide,

connections operated by said driving member and arranged successively toact upon said forepart gage operating mechanism to move the latter intoits operative to permit lost motion between said said forepart gageoperating mechand other connections between said driving member and saidcrease guide operating mechanism for permitting lost motion therebetweenduring the movement of said forepart gage into its operative positionand then acting upon said crease guide mechanism to cause said guide tobe retracted from its operative position.

10. In a rough rounding machine having a rounding knife, a work support,a forepart gage and crease guide mounted for movement between operativeand inoperative positions, operating mechanism for said crease guidecomprising a toggle normally in extended condition and movable into acollapsed condition to retract said crease guide from its operativeposition, means between said toggle and crease guide for adjusting theoperative posi tion of said guide, a second toggle normally in collapsedcondition and movable into a predetermined extended condition for movingsaid forepart gage into its operative position, means between saidsecond toggle and said forepart gage for adjusting the operativeposition of said gage, an operator controlled driving member movable inone direction to cause an connections between said driving member andsaid toggles for permitting lost motion of said driving member withrespect to the operating mechanism for that toggle which is in itsextended condition.

11. In a rounding machine having a rounding knife, :1 work support, aforepart gage and crease guide movable between operative and inoperativepositions, operating mechanism for said crease guide comprising a togglewhich is spring biased normally into a predetermined extended condition,said mechanism comprising adjusting means for varying the operativeposition of said crease guide when said toggle is in its extendedcondition, operating mechanism for said forepart gage comprising anormally collapsed toggle movable into a predetermined extendedcondition, an operator controlled driving member for operating both ofsaid operating mechanisms, said driving member being movable with lostmotion with respect to said crease guide operating mechanism and havinga stop arranged to cooperate with said last-mentioned mechanism on thetermination of said lost motion to retract said crease guide from itsoperative position, and connections between said driving member and saidforepart gage operating mechanism arranged for driving the latter duringsaid initial lost motion of said driving member to advance said forepartgage into its operative position and thereafter for permitting lostmotion of said driving member with respect to said forepart gageoperating mechanism while said crease guide is being retracted from itsoperative position.

In a rough rounding machine having a rounding knife, a work support, aforepart gage mounted for move ment between a normal inoperativeposition and an overative position, a crease guide position, anoperating mechanism for each of said gage and guide, and operatorcontrolled means common to both said mechanism operable in one directionto effect an interchange in the positions of said gage and guide insuccession, said crease guide operating means being constructed andarranged to move said crease guide first in the direction of movement ofsaid forepart gage then oppositely thereto during each of saidinterchanges of said gage and guide.

13. in a rough rounding machine having a rounding forepart gage, acrease guide, guide being mounted for movement between operative andinoperative positions, operating mechanism for said forepart gagearranged normally to hold said gage in its inoperative position,operating mechanism for said crease guide comprising toggle lingsnormally in a partially collapsed state at one side of their fullyextended positions, and treadle operated means connected to both of saidoperating mechanisms for successively driving said forepart gageoperating mechanism to move said gage into its operative position andacting guide operating mechanism to move rom their normal position atone side position.

No references cited.

